ASTROSAT CZTI

Data Quality Report

Orbit 18790

Creation date: 2024-06-27T17:54:45.502245
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_024T01_9000002810_18790cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18790cztM0_level2_quad_clean.evt
Size (bytes)547,107,84086,774,400
Size521.8 MB 82.8 MB
Events in quadrant A3,403,442551,715
Events in quadrant B3,568,270560,234
Events in quadrant C3,375,278536,399
Events in quadrant D5,758,807502,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143522
B0148022
C0142412
D0217712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6837831.213983%
B68371291.886792%
C6837851.243235%
D68374546.640339%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7797 6839 7 7 0.09% 0.10%
B 7797 6839 16 16 0.21% 0.23%
C 7797 6839 0 0 0.00% 0.00%
D 7797 6839 303 303 3.89% 4.43%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 96 29591 164.68 867 851 174.5
A 4 2 14441 77.87 867 851 174.5
A 13 254 11028 58.32 867 851 174.5
B 7 220 84753 518.36 862 841 161.9
B 0 229 37102 224.0 862 841 161.9
B 12 111 19212 113.49 862 841 161.9
C 14 238 132076 682.68 828 833 192.2
C 3 233 8123 37.92 828 833 192.2
C 9 54 7618 35.29 828 833 192.2
D 5 222 1149912 5761.62 823 800 199.4
D 1 52 1082066 5421.44 823 800 199.4
D 7 223 401654 2009.87 823 800 199.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter